34. a2a4 White is a pawn up with good winning chances. Maybe it's still a draw with perfect play, but this a thankless task against Carlsen. 34... f6f5 Trying to create active play in the kingside. 35. a7b8 Another marvelous subtle move. Maybe it's not the best according to computer science, but it's a very good choice for human play. 35... f5g4  36. b8e5 